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Finding the Fourth Proportional to 215,375.32, 297,217.95 and 119,879.97

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Solution

The fourth proportional to 215,375.32, 297,217.95 and 119,879.97 is: 165,434.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,375.32 : 297,217.95 = 119,879.97 : x
  2. Step 2: Convert to fraction form
    215,375.32/297,217.95 = 119,879.97/x
  3. Step 3: Cross multiply
    215,375.32x = 297,217.95 × 119,879.97
  4. Step 4: Simplify right side
    215,375.32x = 35,630,478,929.46
  5. Step 5: Solve for x
    x = 35,630,478,929.46/215,375.32
  6. Step 6: Final answer
    x = 165,434.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.